Platelet-derived growth factor BB gene-released scaffolds: biosynthesis and characterization
Article first published online: 16 OCT 2013
Copyright © 2013 John Wiley & Sons, Ltd.
Journal of Tissue Engineering and Regenerative Medicine
How to Cite
Zhang, Y., Ma, Y., Wu, C., Miron, R. J. and Cheng, X. (2013), Platelet-derived growth factor BB gene-released scaffolds: biosynthesis and characterization. J Tissue Eng Regen Med. doi: 10.1002/term.1825
- Article first published online: 16 OCT 2013
- Manuscript Accepted: 30 AUG 2013
- Manuscript Revised: 25 JUL 2013
- Manuscript Received: 19 NOV 2012
- tissue regeneration;
Tissue engineering generally requires three basic elements; stem/progenitor cells, inductive agents and a biomaterial scaffold; the latter is one of the key components which directly influences cellular activity and matrix formation. Commonly used scaffolds to repair defects in general do not induce stem cell recruitment, which is an essential element to tissue regeneration. In this study, fabrication of a scaffold which is capable of restoring damaged tissue through the recruitment of mesenchymal stem cells (MSCs) by gene therapy of the gene encoding platelet-derived growth factor-B (PDGF-B) was investigated. PDGF-B adenovirus (AdPDGF) was combined into novel mesoporous bioglass–silk fibrin scaffolds, which were characterized for their controlled release and sustained bioactivity. Our results demonstrate that these scaffolds can release PDGF-B adenovirus for up to 3 weeks and increase MSC recruitment, both in vitro and following subcutaneous implantation in mice. Osseous calvarial defects in mice further demonstrate the ability of these scaffolds to enhance tissue regeneration through stem cell homing. This study demonstrates the potent ability of host stem cells to regenerate tissue defects through recruitment of MSCs via gene therapy. Copyright © 2013 John Wiley & Sons, Ltd.